>> and a prankster tells shoppers he's scanning their credit information. >> okay, no. >> you can't stop. >> scanning me. >> what happens when a fake device gets a very real reaction. >> what's up? >> how are you doing, bro? >> this looks like a nice relaxing mountain bike ride through the woods in jasper, alberta, canada. this is brad, riding with his cousin dan. he uploaded this video last august. it is just now catching fire. he pedals to the top of the mountains. brakes skw brakes squeak a little bit and then he notices something. that is crazy. did you see that? >> that was a very big bear coming right at him. >> charging at him. >> the grizzly bear sal, a female, with a cub. >> oh. >> angry mama. don't want to get in the path of an angry mama. >> super dangerous.